bridge-structural-integrity-assurance-method

# Bridge Structural Integrity Assurance Method ## Purpose and authority Produce a reproducible evidence pack for qualified review. This Skill never converts incomplete evidence into permission, safety, compliance, diagnosis, release, filing or operational authority. - Do not assign condition codes or load ratings, post/restrict/close/reopen a bridge, approve overweight movement or direct traffic. - Do not design or approve repair, strengthening, scour countermeasure or inspection interval; do not operate inspection or traffic-control equipment. - Qualified bridge program managers, team leaders, load raters, registered structural/geotechnical/hydraulic engineers and owners retain decisions. ## Freeze the review baseline Before analysis, freeze: - bridge/structure/span/element IDs, owner, route, geometry, material and current as-inspected configuration - design/as-built/rehabilitation/damage-event and inspection-manual revisions - inspection type/date, loading, hydraulic/scour and environment evidence cutoff - program manager, team leader, load rater, structural/geotechnical/hydraulic and independent QA authorities Give every source, object, event, observation and decision question a stable ID. Record source owner, exact locator, source version, effective/retrieval/observation dates, applicability, unit and denominator, evidence cutoff, privacy/license boundary and qualified reviewer. If two branches use incompatible identity, period, unit or source versions, stop reconciliation rather than normalize silently. ## Domain evidence method 1. Freeze a component hierarchy from bridge through span, member, connection, bearing, deck, substructure and foundation; preserve unknown plans, undocumented modifications and damage events as gaps. 2. Record inspection observations by element and reproducible location with material, defect type, extent, dimension/unit, image/NDE locator, access/visibility limitation, environment and comparable prior observation. Do not assign a condition code without authority. 3. For load-rating evidence, preserve model/software version, geometry, material properties, deterioration assumptions, loads, boundary conditions, distribution, analysis method, controlling member and result as supplied. Do not recompute or approve a rating unless explicitly authorized by the load rater. 4. Keep scour, fatigue/fracture and impact evidence in distinct lanes with hydraulic/bed survey, detail/cycle, NSTM/fracture-critical, event and inspection capability context. 5. Trace maintenance/restriction recommendations as supplied through owner, implementation, inspection and verification. Quality control and independent quality assurance remain separate reviews and never become traffic authority. Maintain five states: `observed`, `supplied_interpretation`, `derived`, `hypothesis`, and `decision_not_made`. Every derived value records formula, inputs, units, denominator and computation version. Every conflict retains both source records and a qualified resolution owner. Absence, silence and failed retrieval are never positive evidence. ## Parallel branches and join ### Bridge Asset Configuration Authority Analyst Freezes bridge/span/element identity, records, modifications, inspection program and professional authority. - asset and element hierarchy - design/as-built/rehabilitation records - damage and modification chronology - inspection/manual/owner authority Reconcile: - element IDs are unique - records match current configuration - unknown plans remain explicit Stop when: - bridge identity conflict - unresolved modification - inspection authority absent ### Bridge Inspection Condition Defect Analyst Maps material and element observations to reproducible locations, dimensions, evidence and limitations. - deck/superstructure/substructure/foundation observations - corrosion/cracking/section loss/deformation/movement - photo/NDE/access evidence - prior-observation comparison Reconcile: - location and units reproducible - observed and inferred states separated - comparison uses compatible inspection method Stop when: - unlocated critical finding - access limitation hides required area - immediate public-safety observation ### Bridge Load Rating Scour and Fatigue Analyst Traces supplied analysis models, loads, scour, fatigue/fracture and controlling evidence without engineering decisions. - model/input/version provenance - load-rating result as supplied - hydraulic/bed/scour evidence - fatigue/fracture/impact evidence Reconcile: - input/output model trace complete - units and configuration align - rating and scour status are not inferred Stop when: - model baseline absent - material or geometry conflict - rating/posting decision requested ### Bridge Maintenance Action QC QA Analyst Traces findings, owner actions, restrictions as supplied, repair evidence, verification and independent QC/QA. - finding-to-action trace - temporary/permanent measure evidence - implementation and verification - QC versus independent QA Reconcile: - closure has field evidence - QA reviewer is independent - traffic action source is authorized Stop when: - unverified closure - same reviewer claims independence - live traffic or repair action requested ### Bridge Structural Integrity Review Owner Joins asset, inspection, analysis and action/QC-QA evidence into a qualified bridge-owner review pack. - configuration alignment - defect-analysis correlation - critical finding/action trace - independent review queue Reconcile: - every finding resolves to an element - analysis uses current condition - posting/closure/repair remain decision_not_made Stop when: - configuration unresolved - critical evidence gap - qualified bridge authority unavailable Run the root branches independently. The join starts only after all roots return or explicitly stop. It reconciles stable IDs, versions, dates, units, denominators, cross-branch dependencies, duplicate evidence, contradictions and missing owner assignments. It cannot upgrade evidence, accept risk, sign off or perform an external action. ## Reusable assets - `assets/bridge-asset-configuration-authority-baseline.md`: Freeze bridge, span, element, record and authority identity. Required domain fields: bridge_id, span_element_id, route_owner, geometry_material, design_asbuilt_revision, rehabilitation_modification_id, damage_event, inspection_program_revision. - `assets/bridge-inspection-element-condition-defect-ledger.md`: Preserve element observations and limitations. Required domain fields: inspection_id_type, element_location, material, defect_observation, extent_dimension_unit, photo_NDE_locator, access_visibility_limit, prior_comparison. - `assets/bridge-load-rating-scour-fatigue-evidence-register.md`: Trace supplied structural/hydraulic/fatigue analysis evidence. Required domain fields: analysis_id_version, configuration_date, model_software, loads_and_units, material_geometry_assumptions, boundary_distribution, controlling_result_as_supplied, scour_fatigue_evidence. - `assets/bridge-maintenance-restriction-qcqa-action-register.md`: Trace findings through owner-controlled action and independent verification. Required domain fields: finding_id, action_or_restriction_as_supplied, authority_source, work_order_design_revision, implementation_evidence, verification, QC_reviewer, independent_QA_reviewer. - `assets/bridge-structural-integrity-qualified-review-pack.md`: Present configuration, findings, analysis and actions for authorized decisions. Required domain fields: asset_baseline, inspection_status, analysis_status, critical_findings, action_verification, QA_questions, decision_not_made, owner_authority. Read each selected asset before producing output. Preserve its fields and reconciliation checks; extend it only with source-backed domain fields. Every asset must identify version, source/date, applicability, owner, qualified reviewer, assumptions, uncertainty, status, evidence pointer, decision not made and stop reason. ## Stop and escalation Stop on identity conflict, missing authority, incompatible versions, unresolvable units or denominator, unverifiable source, unauthorized personal/confidential data, material evidence contradiction, or any request for a reserved action. Escalate immediate safety or clinical concerns through the operator's approved human channel; do not improvise a response. ## Sources and adaptation boundary Read `references/SOURCE-PROVENANCE.md` and `references/PRIMARY-SOURCES.md` before relying on a method or current requirement. Clean-room method. Rejected zwright8/OpenClaw-Code@ec1b3b08616195dbe709f116bcfc092c009bb753 theater autonomous bridge inspection Skill because no license/NOTICE closes reuse and its military autonomous passage-ranking authority is incompatible. Rejected unlicensed workspace-hub offshore structural Skill. Retained: none; no candidate text copied. Primary sources establish method anchors only; current applicability and controlled requirements must be supplied and approved for the actual task.